• ×Acostitrapa hemiptera (Borbás) Rauschert accepted as Centaurea hemiptera Borbás
• ×Acostitrapa pseudohemiptera (Wagner) Rauschert accepted as Centaurea pseudohemiptera J.Wagner
• ×Acostitrapa subdiffusa (Prodan) Rauschert accepted as Centaurea subdiffusa Prodan
• ×Anthechamomilla dominii (Rohlena) Rauschert accepted as ×Anthematricaria dominii Rohlena
• ×Anthematricaria dominii Rohlena
• ×Anthemimatricaria inolens P.Fourn.
• ×Anthemimatricaria maleolens P.Fourn.
• ×Anthemimatricaria sulfurea P.Fourn.
• ×Argyrautia degeneri Sherff
• ×Asterago lutea (Hort.) Everett (uncertain > unassessed)
• ×Asterago lutea Everett accepted as ×Solidaster luteus (Everett) M.L.Green ex Dress
• ×Asterigeron ucrainicus Tzvelev (uncertain > unassessed)
• ×Carduogalactites ludoviciae (Bertr.) P.Fourn.
• ×Centauserratula mouterdei Arènes
• ×Chrysaboltonia pulcherrima Arends (uncertain > unassessed)
• ×Chrysanthemoachillea borzae Prodan (uncertain > unassessed)
• ×Chrysanthemoachillea carmen-sylvae Prodan ex Nyár. (uncertain > unassessed)
• ×Cirsio-carduus borderi (Rouy) Arènes (uncertain > unassessed)
• ×Cirsio-carduus cirsiformis (Vuk.) Arènes
• ×Cirsio-carduus hohenackeri Arènes
• ×Cirsio-carduus jaubertianus (Sennen & Septimin) Arènes
• ×Cirsio-carduus lutetianus Arènes
• ×Cirsio-carduus parisiensis P.Fourn.
• ×Colycea valdesii-bermejoi (Fern.Casas & Susanna) Fern.Casas & Susanna (uncertain > unassessed)
• ×Colymbacosta genesii-lopezii (Fern.Casas & Susanna) Fern.Casas & Susanna (uncertain > unassessed)
• ×Colymbacosta grabowskiana (Wagner) Rauschert accepted as Centaurea ×grabowskiana J.Wagner
• ×Conygeron huelsenii (Vatke) Holub (uncertain > unassessed)
• ×Conyzigeron huelsenii (Vatke) Rauschert
• ×Crepidiastrixeris denticulato-lanceolata Kitam. accepted as Crepidiastrum muratagenii H.Ohashi & K.Ohashi
• ×Crepidiastrixeris denticulato-platyphylla (Makino) Kitam. accepted as Crepidiastrum ×nakaii H.Ohashi & K. Ohashi
• ×Crepidiastrixeris surugensis (Hisauti) Kitam. accepted as Crepidiastrum surugense (Hisauti) Yonek.
• ×Crepi-Hieracium garnieri (Petitm.) P.Fourn.
• ×Filfia mixta (Holuby) Holub
• ×Giflifa mixta (Holuby) Chrtek & Holub (uncertain > unassessed)
• ×Heterokalimeris maruyamae Kitam. (uncertain > unassessed)
• ×Solidaster hybridus Wehrhahn (uncertain > unassessed)
• ×Solidaster lutens M.L.Green
• ×Solidaster luteus (Everett) M.L.Green (uncertain > unassessed)
• ×Solidaster luteus (Everett) M.L.Green ex Dress
• Aaronsohnia factorovskyi Warb. & Eig
• Aaronsohnia pubescens (Desf.) K.Bremer & Humphries
• Aaronsohnia pubescens subsp. maroccana (Ball) Fennane & Ibn Tattou
• Aaronsohnia pubescens subsp. maroccana (Ball) Förther & Podlech accepted as Aaronsohnia pubescens subsp. maroccana (Ball) Fennane & Ibn Tattou
• Aaronsohnia pubescens subsp. pubescens (Desf.) K.Bremer & Humphries
• Abasoloa taboada La Llave & Lex. (uncertain > unassessed)
• Abrotanella caespitosa Petrie ex Kirk
• Abrotanella christensenii Petrie accepted as Solenogyne gunnii (Hook.f.) Cabrera
• Abrotanella crassipes Skottsb. accepted as Abrotanella linearifolia A.Gray
• Abrotanella diemii Cabrera
• Abrotanella emarginata (Gaudich.) Cass.
• Abrotanella fertilis Swenson
• Abrotanella filiformis Petrie accepted as Abrotanella linearis Berggr.
• Abrotanella forsterioides (Hook.f.) Benth. (uncertain > unassessed)
• Abrotanella forsteroides (Hook.f.) Benth. (uncertain > unassessed)
• Abrotanella inconspicua Hook.f.
• Abrotanella linearifolia A.Gray
• Abrotanella linearis Berggr.
• Abrotanella linearis var. apiculata G.Simpson & J.S.Thomson accepted as Abrotanella linearis Berggr.
• Abrotanella linearis var. linearis accepted as Abrotanella linearis Berggr.
• Abrotanella moseleyi Skottsb. accepted as Abrotanella linearifolia A.Gray
• Abrotanella muscosa Kirk
• Abrotanella nivigena (F.Muell.) F.Muell. (uncertain > unassessed)
• Abrotanella nivigena (F.Muell.) F.Muell. ex Benth.
• Abrotanella papuana S.Moore accepted as Abrotanella nivigena (F.Muell.) F.Muell. ex Benth.
• Abrotanella patearoa Heads
• Abrotanella purpurea Swenson
• Abrotanella pusilla (Hook.f.) Hook.f.
• Abrotanella rhynchocarpa Balf.f. accepted as Rhamphogyne rhynchocarpa S.Moore
• Abrotanella rostrata Swenson
• Abrotanella rosulata (Hook.f.) Hook.f.
• Abrotanella scapigera (F.Muell.) F.Muell. ex Benth. (uncertain > unassessed)
• Abrotanella spathulata (Hook.f.) Hook.f.
• Abrotanella submarginata A.Gray
• Abrotanella trichoachaenia Cabrera
• Abrotanella trilobata Swenson
• Abrotanum alpestre Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum ambiguum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum brachylobium Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum congestum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum foemina Garsault accepted as Santolina chamaecyparissus L.
• Abrotanum frutescens Gilib. accepted as Artemisia ledebouriana Besser
• Abrotanum incanescens Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum mas Garsault accepted as Artemisia alba Turra
• Abrotanum pauciflorum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum pedunculare Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum platylobum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum pulverulentum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum rhodanicum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum suave Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum virgatum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum viridulum Jord. & Fourr. accepted as Artemisia alba Turra
• Abrotanum xerophilum Jord. & Fourr. accepted as Artemisia alba Turra
• Absinthium alpinum Besser accepted as Artemisia campestris subsp. variabilis (Ten.) Greuter
• Absinthium arborescens Moench accepted as Artemisia arborescens (Vaill.) L.
• Absinthium arborescens Vaill. accepted as Artemisia arborescens (Vaill.) L.
• Absinthium argenteum Besser accepted as Artemisia argentea L'Hér.
• Absinthium bipedale Gilib. accepted as Artemisia absinthium L.
• Absinthium bipetala Gilib. (uncertain > unassessed)
• Absinthium boreale Besser accepted as Artemisia campestris var. borealis (Pall.) M.Peck
• Absinthium campestre Dulac accepted as Artemisia ledebouriana Besser